Andrew hunter



dnitml tat2t ANDREW HUNTER, OF SAN FRANCISCO, CALIFORNIA.

Letters Patent No. 90,844, dated June 1, 1869.

MPROVEMENT IN GRAIN-SEPARATOR.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern Be it known that .1, ANDREW HUNTER, of thecity.

and county of San Francisco, in the State of California, have inventedor discovered new and useful Improvements in Machines for SeparatingGrain; and I do hereby declare that the following is a full and exactdescription of the same, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon.

Figure 1 is a side view.

Figures 2 and 3 are end views. 7

Figure 4 is a. top View, with a portion of same removed, to better showthe various parts of the machine.

A A is a frame-work of wood. a

B is a chute, of any required length, havinga downward inclination fromfront to rear.

G is a chute or frame-work, with plates inclining to the rear end.

D is a lever, for striking against the upper end 0 the chess-chute.

E is a hopper, arranged with feed-rollers.

F is a revolving roller, to carry the grain on to the screen or chute.

H is an eccentric roller, for raising the lid or feedboard. g

I is the lid or feed-board, hinged to the inside of the bottom of thehopper.

J J are eccentrics, for vibrating the upper end of the chute.

T is'a shaft, with cam or ratchet-wheels, K, for giving a verticalvibratory motion to the chutes and levers. 1

L L are springs ,for keeping the chute 0 against cam-wheels K K. I

M M are set-screws, for raising and lowering the chute.

N N are adjustable bars for the chute to rest on.

O O are set-screws, for giving any required vibration to chute G.

P P are hangers, forsnspending frame 0, with setscrews for changing theelevation of the plates.

R is a box, for receiving the clean grain.

S is a crank, for rotating the cam-shaft, orfihe same may be done by anyother known means.

V is achute, for carrying oil the barley and larger grains.

X X are pulleys, for rotating feed-rollers and eccentric-shaft.

Operation.

The machine being set, in motion, the eccentricroller is turned, as maybe desired, to raise the feedboard I, in order to let the grain on thescreen W W.

The small and imperfect grain and foul seeds pass.

through the wheat and larger grains pass over screen W W on to theperforated plates Y Y Y Y.

The wheat passing through said plates, the oats, barley, straw, 850.,pass over the end of the plates.

By the use of dilferent-size screens, any number of separations can begiven.

The separations are. produced by cam or ratchetwlreels, the levers oreccentrics striking against the bottom and end of the chutes.

The degree of concussion or blow is regulated by means of the.set-screws O and M, or other suitable device. I

The upper and lower end of chute B receive a blow, by means of cam orratchet-wheels, levers, and cocentrics, sufiicient to move the grainfreely down the screen- The cam-wheels strike against the end of chuteC, producing a horizontal vibration and percussion suflicieut to movethe barley and oats off the plates, and pass the wheat through them intobox R, the barley and oats into spout V. I

Having thus describled my machine, and its mode of operation,

What I claim as my invention, and desire to secure I by Letters Patent,is

1. The formation of the chuteB and C, with screen \V \V, and perforatedplates Y Y Y Y, and inclining as shown in fig. l, substantially asdescribed, "and for the uses and purposes as hereinbefore set forth. 2.The combination, with the grain-separating chutes, of the mechanismsubstantially such as herein described, for imparting a horizontalvibratory, or both horizontal and vertical vibratory movement to thesame, in the manner and for the purposes set forth.

3. The combination of cross-bars N N with chutes B and O, set-screws Oand M, and pulleys X X, substantially as described, and for the usesaudpurpose hereinbefore set forth.

4. The combination of hopper E, feed-b0ard I, feedroller F,eccentric-roller H, substantially as described,

and for the uses and purposes bereinbefore set forth, said cornbinatiouof hopper, feed-board, and rollers to be attached to any machine forsimilar uses.

In testimony whereof, I have signed my name to this specification,before two subscribing witnesses.

ANDREW HUNTER.

Witnesses J. W. MCKENZIE, A. S. GOULD.

